Fixes

• Updates dependency on File Plugin to latest version (4.1.3)
• Fixes an error on native apps running version 2 of the File Transfer Plugin but get an OTA update with version 3 of the File Transfer Plugin: CheckFileTransferPlugin was incorrectly returning OS-PLUG-FLTR-0003 in Error structure. After this fix, it now correctly returns OS-PLUG-FLTR-0002 in Warning structure.
• Fixes a similar error for OTA where the OS-PLUG-FILE-0002 warning from CheckFilePlugin (via File Plugin dependency) was being treated as an error when it should be a warning.
• The OTA procedure from older plugin versions has been improved. Now CheckFileTransferPlugin returns IsAvailable=True even if on a mobile app with version 2 bundled in the mobile package. Non-deprecated client actions now also work with in this scenario, whereas before they returned an error.

• Fixed an issue where DEPRECATED_CheckFileTransferPlugin always returned false, causing deprecated actions to fail with "Plugin not present or not loaded".

Exposes two new client actions:

• UploadFileWithHeaders
• DownloadFileWithHeaders

Both work similarly to the existing upload and download client actions but provide additional functionality in order to allow headers to be specified for the network requests.

A typical use case would be to use "Content-Type" header set as "application/octet-stream" in order to upload a video file into a REST endpoint.

Fix error when cordova is not loaded